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Neurodegenerative diseases (Alzheimer’s, Parkinson’s etc.) causes brain cell damage leading to dementia. The major restriction remains in delivering drug to the central nervous system is blood brain barrier (BBB). The aim of this study was to develop a liposomal drug delivery system of  Aphanamixis polystachya  leaf extract for the treatment of neurodegenerative diseases such as Alzheimer’s and Parkinson’s disease. In this study GC-MS analysis is used to determine major constituents of  Aphanamixis polystachya  leaf extract. Liposomal batches of  Aphanamixis polystachya  leaf extract was prepared using design of experiment (DoE) and characterized using Malvern zetasizer, transmission electron microscopy (TEM), and FT-IR. Stability study of blank and leaf extract loaded liposome were performed in gastric media.  In-vivo  neurobehavioral and anti-inflammatory studies were performed on mice and rat model respectively. GC-MS data showed that major constituents of  Aphanamixis polystachya  leaf extract are 2-Pentanone, different acids (Octadec-9-enoic acid, 5-Hydroxypipeloic acid etc.), and Beta-Elemene etc. Malvern Zetasizer and TEM data showed that liposome batches of  Aphanamixis polystachya  leaf extract were in the range of 120 - 180 nm. Interactions between process parameters and material attributes found to have more impact on the average particle size and polydispersity of liposome batches compared to the impact of each parameter in isolation. Stability studies data suggest that blank and leaf extract loaded liposomes were stable at gastric conditions after 4 hours.  In-vivo  neurobehavioural study data indicated that significant improvement in the memory function, locomotor activity and ambulatory performance of dementia induced mice was observed for the liposomal batches compared to merely  A. polystachya  leaf extract.

Liposomal drug delivery of Aphanamixis polystachya leaf extracts and its neurobehavioral activity in mice model